Transmission-gearing.



W. W. HENDERSON.

TRANSMISSION GEARING.

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956,089. Patented Apr. 26, 1910.

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Patented Apr. 26, 1910.

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w. w. HENDERSON. TRANSMISSION GEARING.

APPLICATION FILED H0119, 1909.

' W. W. HENDERSON.

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956,089. Patented Apr. 26, 1910.

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W. W. HENDERSON. TRANSMISSION GEARING.

APPLICATION FILED NOV. 18, 1909.

Patented Apr. 26, 1910:

W. W. HENDERSON.

TRANSMISSION GEARING.

APPLICATION mum NOV. 12, 1909.

956,089, Patented Apr.26, 1910.

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w/fino erJaaf UNITED" STATES PATENT OF ICE- mm w. nnnnnnson, or wnsnme rou, ms'rmc'r or conmm.

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956,089. speciflmlflan of Letters Patent- Patented Apr. 26, 1910.

Application filed November 1a, 1909. Serial no. 527,739.

To allwhom it may concern: back of the hub of the late 6, and thus Be it lmown that I, WILLIAM W. Ham) son a citizen of the United States residing at Washington, in the District of olumbia, have invented certain 'new and useful Improvements in Transmission-Gearing, of which the following is a specification.

This invention relates to transmission gearing, and comprises a direct and reverse drive gearing operating in connection with a hydraulic clutch such for exam Is as that shown and described in my U. S. atent No. 879045, dated Feb. 11, 1908.

V The invention formmg the subject of the present application is a modification of and improvement on the caring describedand claimed in my pen g application No. 474260, filed Jan. 26, 1909.

The present inventlon has for its object to provide an improved construction in which the transmission gearin is located in the same casing as the clutc avoiding the necessity for'an intermediate shaft and connections, the clutch casing also acting as a fly wheel, and the whole device providing an improved direct connection between the engine shaft and the driven shaft. 7

The invention is casable of eneral application,but is intende especi y for use in connection with motor vehicles. The change speed gear described in the pendin application above mentioned .is omitted e present device providing gearing for only one speed on the orward drive and one on the reverse, the speed bein variable b means of the hydraulic clutc as more f 1y explained in the. atent above referred to.

' tion'm the axis of the shaft.

' is a section on the line 6-6 of Fig. 2.

Except for modifications hereinafter mentioned, the clutch is the same as that shown in m patent above mentioned and will be bri, y-des'cribed: 6 indicates the back plate 55, plates and acts as a fly of the-'clutch casing and 7 the front plate. A weighted rim 8 is bolted between the wheel. The

engine or driving shaft 10 is bolted to the scribed in m the casing and fly wh are drivenwith said shaft. The driven shaft is indicated at 11, and projects through the front plate of the casing, terminating in a circular reces". 6 formed in the hub of the back plate. Fittin within the casing and against the back p ate 6 is a circular plate 16 made integral with a hollow block or wall 13 which forms the inner wall of the annular fluid chamber 17, the outer wall of which is formed by the rim 8. At its front or free end the wall .13 is bolted or otherwise secu'red to an annular face plate 13 which is preferably made integral with a box 16 surrounding the shaft 11, said box being.

formed at the rear or inner end of a sleeve to be hereinafter more particularly described and which projects throughn the front plate of the clutch casing. Wit the fluid chamber are roller'pistons 20, as described in my said patent. The chamber 17 is divided by partitions 29 into several compartments the ends' of' which are connected by byasses 31 controlled by valves 32, also in t e manner described in said ateut. Instead of the internal ring gear or drivingthe roller pistons, as shown in my said patent, the present. structure has a gear on one trunnion of each piston,

driven by a spur gear 51 through an intermediate gear '50, said gears bemg set in suitable recesses in the back of the late 16. The annular sgurgear 51 is keye to the backplatefi of ecasi'ng by key 51". When the inner and outer parts of the clutch rotate with respect to each other, the pistons are turned to pass'the abutments 29, as desaid patent. The valves 32 controlling t e relative movement of the parts may be operated by the means shown m said patent, and also shown herein, or by any other suitable means. a

The 0 eration of the clutch thus descrlbed may be, riefly stated as follows: The outer clutch casing rotates with the shaft section 10, and when the valves 32 are open as shown in Fig. 5 the gears 50 and 50 cause the pistons 20 to roll around in the chamber 17, and by their movement .force the .fluid around through the passages 31 without movement of the driven parts. By closing the valves more or less the passage of the fluid will be obstructed to a greater or less extent, consequently the motion will be transmitted at corresponding speed to the circular plate 16 and thence to theshaft 11 as' hereinafter described.

The walls 13, 13 and the box16kproduce an internal chamber within the clutch which contains the reverse gearing to be described.

As stated, the hub of the back plate 6 is recessed as indicated at 6, and the end of the driven shaft 11 projects into this recess and is provided therein with a clutch member, consisting conveniently of a pinion 20. keyed on the' end of the shaft as indicated at 21, and this clutch member is arranged to be engaged or disengaged with a corresponding clutch member consisting of an internal gear 22 formed in one end of an annular casing 23 which has a projecting flange 24 fixed to the .plate 16 of the clutch as by screws 25, this member beinglooseon the shaft 11. I use a pinion 20 and gear 22 to form a clutch simply for the purpose of convenience. It will be seen that when the shaft 11 is moved forwardly to engage the clutch members 20 and 22 the shaft will be directly driven from the main clutch member 16, the speed of which may be varied as described in my said patent. This gives the direct or forward drive from the driven member 16 of the clutch to the driven-shaft 11. When the shaft is shifted inwardly to disengage the parts 20 and 22 the drive is accordingly stopped. For the reverse, the front end of the member 23 is provided with an-external gear 26 which meshes with pinions 27 carried on studs 28 fixed to the inwardly projecting flange 29 ,ofa box formed by said flange, the outer circular wall 30 and a front plate 31., ,.This box containsa gearmember which has on one side an internal gear 33 which meshes with the pinions 27 and on the other side an internal clutch gear 34 which is arranged tomesh with a clutch pinion 35 keyed on the shaft 11 as shown. The member 35 is thrown'in mesh with the member 34 by shifting the shaft inwardly to 3 a fullv extent,.and' it may be stated that the pinions 20 and 35 are so located on the shaft 11 that when-the shaft is shifted to neutral or middle'position both of said pinions will be. disengaged, as shown in Fig. 2. The front plate 31 of the reverse gear casing is boxed out as indicated at 31, to form a space for the movement of'the pinion 35 whe'n the shaft 11 is shifted, said box fitting within the box 16 above described and, furthermore, the box 31 is extended to form a sleeve 41 between the shaft and the sleeve 40, projecting, however, beyond the front end of the latter.

The operation of the reverse drive is as follows: The shaft .11 is shifted inwardly to enga the pinion 35 and gear 34 and disengage t e direct drive pinion '20. The motion of the driven element 16 'of the main clutch is then transmitted through the sleeve 23, gear 26, pinions 27, gear 33 and clutch members 34 and 35 to the shaft 11. During this action it is necessary to hold the gear casing 31 against revolution and for this purpose I provide a cuff 42 having a non-circu-- lar recess 43 in its inner end arranged to fit over the non-circular end 44 of the sleeve 41. The cuff 42 is shifted into and outof engagement by means of .a lever 45 having pins 46 projecting into said end and preventing rotation thereof. The same lever serves to shift the shaft in or out, for which purpose the shaft has a collar 47 fixed thereon to run in an internal groove 48 made in the cufi. It will be seen that when the cufi is shifted to engage the same with the sleeve 41 the shaft will also be shifted inwardly to engage the part 35 and disengage the part 20. The drive may thus be chan ed from direct to reverse by movement 0 a single lever, the speed in either condltion being varied by manipulation of the hydraulic clutch valves as above described and as more fully explained in my said patent.

In addition to the parts above descr bed I retain certain features shown in saidpatent and pending application. Thus the sleeve 40, connected to the driven part of the main clutch, may be provided with a wheel 80 to receive a band brake for braking the drive. I also show the positive clutch feature of the former patent, said clutch being operative when the fluid clutch is fully engaged, a cufi' 53 on the sleeve 40 being shifted by a suitable lever and collar 'connection and having projections 43 which enter notches 52 in a ring 54 which is frictionally engaged between packing 56 clamped to the front plate 7 of the clutch easing by a ring 57 and screws 58 with pressure suflicient to transmit positively any ordinary strain, but allowing slip under excessive conditions, said collar 53 being keyed on the sleeve 40; and when the collar issaid member rotates, a reversing gearing between the shaft and the said member, a clutch device for direct drive between said member and the shaft and located on oneside of said member, a clutch device for reverse drive between said gearing and the I shaft, and located on the opposite side ofsaid member, and means to shift the shaft vices'and disengage the other.

2. The combination of a rotary driving member, a driven shaft on which said member is loosely mounted and around' which said member rotates, a reversing gearing between the shaft and the said member on one side of said member, a clutch device for direct drive between said member andthe shaft on the opposite side .of said member, a clutch device for' reverse drive between said gearing and the shaft, said shaft being shiftable lengthwise to engage one of said clutch devices or disengageboth, and means to so shift the shaft, for the purpose stated.

3. The combination of a main clutch having rotary driving and driven members, a shaft around which the driven member rotates, said shaft being shiftable lengthwise, a clutch device for direct drive between the said driven member and the shaft, a reverse gearing and clutch device for reverse drive between said driven member and shaft, and means to shift the shaft lengthwise to engage one of said clutch devices and disengage the other.

4. The combination of a rotary driving member, a driven shaft, said shaft being shiftable axially in the axis of said member, a clutch device for direct drive between the said member and shaft, a planetary reversing gearing revoluble around the shaft and operatively connected to the said member, a clutch device for reverse drive between said shaft and gearing, and means to shift the shaft to engage one of said clutch devices and disengage the other.

5. The combination of a rotary driving member, a driven shaft, said shaft being shiftable axially in the axis of said member, a clutch device for direct drive between the said member and shaft, a planetary reversing gearing revoluble around the shaft and operativelyconnected to the said member, said gearing including a gear casing having a sleeve extending along the shaft, a clutch device for reverse drive between said shaft and gearing, means to shift the shaft to engage one of said clutch devices and disengage the other, and means engageable with said sleeve to Hold said casing against rotation when the reverse clutch device is engaged.

6. The combination of a rotary driving member, a driven shaft shiftable axially in the" axis of said member, a direct drive clutch device between said member and shaft, one part of the clutch being fastened to the said member and the other part to the shaft, the former part having a gear thereon,

a lanetary reverse gearing revoluble around said shaft and including a gear which meshes with said gear, a reverse drive clutch device one part which is carried by said planetary earin and the other part of which is astene to the shaft, means to shift the shaft to engage one of said clutch devices and disengage the other, and means to hold the planetary gearing a ainst revolution when the reverse drive 0 utch device is in engagement.

7. The combination of a rotary driving member, a driven shaft shiftable axially in the axis of said member, a clutch device for direct drive between said member and shaft, a planetary reversing gearing revoluble around the shaft and geared to said member, a gear casing carrying said gearing, a clutch device for reverse drive between said shaft and gearing, means to shift the shaft to engage one of said clutch devices and disengage the other, and means operating automatically to hold said casin against rotation when the reverse clutch evlce is engaged.

8. The combination of a driven shaft shiftable lengthwise, a rotary driving member forming an inclosing casing around said shaft, direct drive mechanism in the casing,

and enga eable with the shaft and said member when the shaft is shifted in one direction, reverse drive mechanism mounted on the shaft and in the casing and engageable with the shaft and said member when the shaft is shifted in the opposite direction, and means to shift the sha t, for the purposes stated.

9. The combination of a driven shaft shiftable lengthwise, a rotary driving member having a sleeve bearing on the shaft, said sleeve. rovided with one member of a clutch device and a gear, the other member of the clutch device being fast on the shaft, 'a planetary gearing and its casing revoluble around the shaft and meshing with said gear and having one member of a reverse drive clutch device, the other member thereof being fast on the shaft, means to shift the shaft to engage one clutch device and disengage the other, and means to hold the planetary gearing casing against revolution when the reverse drive clutch device is en aged.

n testimon whereof, I afiix my signature in presence 0 two witnesses.

WILLIAM W. HENDERSON.

Witnesses:

EDITH L. SMITH, Gno. E. Tnw. 

